You can do skin prick
tests or shell out the dough for expensive food sensitivity
lab results (that may not even tell you anything definitive), but the
gold standard remains the food challenge: strict avoidance of the suspected food until symptoms subside followed by an oral challenge.
If An In House Positive Elisa
Test Is Done In Vet Office, It Should Always Be Confirmed With
Gold Standard Test Called Ifa Done At Outside
Lab.